There is usually no obvious sign of spitting up when an infant gets cold. Infant spitting up may be accompanied by increased intestinal peristalsis, nausea, abdominal pain, bloating, fever, poor appetite and other symptoms. Infants spitting up after getting cold is mainly due to stomach cramps that occur after the infant’s stomach is cooled, and gastrointestinal peristalsis is accelerated, thus causing spitting up. In addition, because the infant’s stomach is horizontal and has a relatively small capacity, the pyloric sphincter at the outlet of the stomach is better developed, while the pancreatic sphincter at the entrance is poorly developed, so spitting up is easy to occur. Infants with cold spit up usually have no obvious aura, may be accompanied by nausea, or have abdominal pain, abdominal distension, fever, poor appetite and other manifestations. If a baby is cold and spits up, if it is more serious or if the spitting up is repeated frequently, it is recommended that the parents bring the child to the doctor for examination, to clarify the condition and then to carry out targeted treatment.